|
Marketable Securities (Gross Unrealized Losses And Fair Values Of Investments By Investment Category And Length Of Time) (Details) (USD $)
|
Dec. 31, 2013
|
Mar. 31, 2013
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
$ 34,281,813 |
$ 1,680,583 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(497,711) |
(13,342) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
34,281,813 |
1,680,583 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(497,711) |
(13,342) |
|
Corporate Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
32,852,596 |
1,171,976 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(493,700) |
(4,187) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
32,852,596 |
1,171,976 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
(493,700) |
(4,187) |
|
Municipal Bonds [Member]
|
|
|
| Schedule of Investments [Line Items] |
|
|
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Market Value |
1,429,217 |
508,607 |
| Marketable Securities, Continuous Unrealized Loss Position, Less than 12 Months, Gross Unrealized Losses |
(4,011) |
(9,155) |
| Marketable Securities, Continuous Unrealized Loss Position, Fair Market Value, Total |
1,429,217 |
508,607 |
| Marketable Securities, Continuous Unrealized Loss Position, Gross Unrealized Losses, Total |
$ (4,011) |
$ (9,155) |